A 62-year-old man crossing an intersection in Vallejo died Friday evening after being knocked down by one car and struck by a second, police said.

The man, Sergio Pelayo of Vallejo, was crossing Tennessee and Halliday streets around 5:30 p.m. when he was struck, said Lt. Herman Robinson. Pelayo was taken to Kaiser Hospital, where he died of his injuries, said Robinson, adding that no drugs or alcohol appear to have been involved and that both drivers are cooperating with police.

Robinson said he did not know why Pelayo had been hit but took a moment to caution people against wearing dark colors at night. "It's dark, and ... you just don't see people," Robinson said.

On Saturday in San Francisco, a motorcycle struck and injured an elderly pedestrian at Market and Sixth streets, said San Francisco police Officer Gordon Shyy, adding that neither suffered life-threatening injuries.

Later that evening, a pedestrian was struck by a car in the Richmond District. The incident happened at 17th Avenue and California Street at 9:40 p.m., according to police. Paramedics transported the pedestrian, who was not identified, to San Francisco General Hospital. Police did not know the extent of the person's injuries. The driver of the car, a four-door sedan, remained on the scene.

The incidents are the latest in a recent string of pedestrian deaths and injuries around the Bay Area that began around 3:30 p.m. last Tuesday, New Year's Eve, when 86-year-old Zhen Guang Ng of San Francisco was struck and killed at Rolph and Naples streets in the city's Crocker-Amazon neighborhood.

The driver, Giampaolo Boschetti, 69, of San Francisco, was arrested on suspicion of vehicular manslaughter with gross negligence and failure to stop at a stop sign, police said.

Also on New Year's Eve, Ashley Capuchin, 19, of Diamond Springs (El Dorado County) was struck and killed in Fremont by a Ford truck around 10 p.m. while walking in an intersection of Paseo Padre Parkway and Mowry Avenue, Fremont police said. She was carrying her 3-month-old son, who was injured, as was her 17-year-old sister, who was walking with her.

The driver stopped and was cooperative, police said.

That same night, 6-year-old Sophia Liu also died and her mother and brother were injured after a car hit them near Polk and Ellis streets in San Francisco, police said. The driver, Syed Muzaffar, 57, of Union City, failed to yield to the family while they were crossing the street near Civic Center, said Officer Albie Esparza, a police spokesman. Muzaffar was arrested on suspicion of vehicular manslaughter with gross negligence and failure to yield to pedestrians in a crosswalk, Esparza said.

On Thursday in San Francisco, a man who appeared to be in his 20s was rushed to the hospital after being hit by a car at Bush and Leavenworth streets about 5 p.m., police said.

A day later, in San Francisco's Lower Nob Hill neighborhood, another pedestrian was struck by an SUV at about 10:30 am and taken to a local hospital with non-life-threatening injuries, police said.

Also on Friday, a dump truck hit two pedestrians in downtown San Rafael, killing 67-year-old Olga Rodriguez of Novato and seriously injuring her companion, a 68-year-old man, police said.

The victims were in a crosswalk at Third and Hetherton streets when they were struck about 12:15 p.m., said San Rafael police Cpl. Justin Graham, who said the driver has been cooperative.